Evidence for circulation of the Rift Valley fever virus among livestock in the Union of Comoros
Rift Valley fever virus (RVFV) is an arthropod-borne phlebovirus reported to be circulating in most parts of Africa. Since 2009, RVFV has been suspected of continuously circulating in the Union of Comoros. To estimate the incidence of RVFV antibody acquisition in the Comorian ruminant population, 191 young goats and cattle were selected in six distinct zones and sampled periodically from April 2010 to August 2011. We found an estimated incidence of RVFV antibody acquisition of 17.5% (95% confidence interval (CI): [8.9-26.1]) with a significant difference between islands (8.2% in Grande Comore, 72.3% in Moheli and 5.8% in Anjouan). Simultaneously, a longitudinal entomological survey was conducted and ruminant traderelated information was collected. No RVFV RNA was detected out of the 1,568 blood-sucking caught insects, including three potential vectors of RVFV mosquito species. Our trade survey suggests that there is a continuous flow of live animals from eastern Africa to the Union of Comoros and movements of ruminants between the three Comoro islands. Finally, a cross-sectional study was performed in August 2011 at the end of the follow-up. We found an estimated RVFV antibody prevalence of 19.3% (95% CI: [15.6%-23.0%]). Our findings suggest a complex RVFV epidemiological cycle in the Union of Comoros with probable inter-islands differences in RVFV circulation patterns. Moheli, and potentially Anjouan, appear to be acting as endemic reservoir of infection whereas RVFV persistence in Grande Comore could be correlated with trade in live animals with the eastern coast of Africa. More data are needed to estimate the real impact of the disease on human health and on the national economy.
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dig-cirad-fr-5737682024-01-28T22:09:39Z http://agritrop.cirad.fr/573768/ http://agritrop.cirad.fr/573768/ Evidence for circulation of the Rift Valley fever virus among livestock in the Union of Comoros. Roger Matthieu, Beral Marina, Licciardi Séverine, Soulé Miradje, Faharoudine Abdourahime, Foray Coralie, Olive Marie-Marie, Maquart Marianne, Soulaimane Abdouroihamane, Kassim Ahmed Madi, Cetre-Sossah Catherine, Cardinale Eric. 2014. PLoS Neglected Tropical Diseases, 8 (7):e3045, 11 p.https://doi.org/10.1371/journal.pntd.0003045 <https://doi.org/10.1371/journal.pntd.0003045> Evidence for circulation of the Rift Valley fever virus among livestock in the Union of Comoros Roger, Matthieu Beral, Marina Licciardi, Séverine Soulé, Miradje Faharoudine, Abdourahime Foray, Coralie Olive, Marie-Marie Maquart, Marianne Soulaimane, Abdouroihamane Kassim, Ahmed Madi Cetre-Sossah, Catherine Cardinale, Eric eng 2014 PLoS Neglected Tropical Diseases L72 - Organismes nuisibles des animaux L73 - Maladies des animaux S50 - Santé humaine E70 - Commerce, commercialisation et distribution Virus de la fièvre de la vallée du Rift épidémiologie fièvre ruminant genre humain transmission des maladies Enquête pathologique anticorps marketing bovin caprin http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_10810 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_4586 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_28665 http://aims.fao.org/aos/agrovoc/c_493 http://aims.fao.org/aos/agrovoc/c_4620 http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_3324 Comores Afrique orientale http://aims.fao.org/aos/agrovoc/c_1790 http://aims.fao.org/aos/agrovoc/c_2442 Rift Valley fever virus (RVFV) is an arthropod-borne phlebovirus reported to be circulating in most parts of Africa. Since 2009, RVFV has been suspected of continuously circulating in the Union of Comoros. To estimate the incidence of RVFV antibody acquisition in the Comorian ruminant population, 191 young goats and cattle were selected in six distinct zones and sampled periodically from April 2010 to August 2011. We found an estimated incidence of RVFV antibody acquisition of 17.5% (95% confidence interval (CI): [8.9-26.1]) with a significant difference between islands (8.2% in Grande Comore, 72.3% in Moheli and 5.8% in Anjouan). Simultaneously, a longitudinal entomological survey was conducted and ruminant traderelated information was collected. No RVFV RNA was detected out of the 1,568 blood-sucking caught insects, including three potential vectors of RVFV mosquito species. Our trade survey suggests that there is a continuous flow of live animals from eastern Africa to the Union of Comoros and movements of ruminants between the three Comoro islands. Finally, a cross-sectional study was performed in August 2011 at the end of the follow-up. We found an estimated RVFV antibody prevalence of 19.3% (95% CI: [15.6%-23.0%]). Our findings suggest a complex RVFV epidemiological cycle in the Union of Comoros with probable inter-islands differences in RVFV circulation patterns. Moheli, and potentially Anjouan, appear to be acting as endemic reservoir of infection whereas RVFV persistence in Grande Comore could be correlated with trade in live animals with the eastern coast of Africa. More data are needed to estimate the real impact of the disease on human health and on the national economy. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/573768/1/document_573768.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1371/journal.pntd.0003045 10.1371/journal.pntd.0003045 info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pntd.0003045 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1371/journal.pntd.0003045 |
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L72 - Organismes nuisibles des animaux L73 - Maladies des animaux S50 - Santé humaine E70 - Commerce, commercialisation et distribution Virus de la fièvre de la vallée du Rift épidémiologie fièvre ruminant genre humain transmission des maladies Enquête pathologique anticorps marketing bovin caprin http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_10810 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_4586 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_28665 http://aims.fao.org/aos/agrovoc/c_493 http://aims.fao.org/aos/agrovoc/c_4620 http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_3324 http://aims.fao.org/aos/agrovoc/c_1790 http://aims.fao.org/aos/agrovoc/c_2442 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux S50 - Santé humaine E70 - Commerce, commercialisation et distribution Virus de la fièvre de la vallée du Rift épidémiologie fièvre ruminant genre humain transmission des maladies Enquête pathologique anticorps marketing bovin caprin http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_10810 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_4586 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_28665 http://aims.fao.org/aos/agrovoc/c_493 http://aims.fao.org/aos/agrovoc/c_4620 http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_3324 http://aims.fao.org/aos/agrovoc/c_1790 http://aims.fao.org/aos/agrovoc/c_2442 |
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L72 - Organismes nuisibles des animaux L73 - Maladies des animaux S50 - Santé humaine E70 - Commerce, commercialisation et distribution Virus de la fièvre de la vallée du Rift épidémiologie fièvre ruminant genre humain transmission des maladies Enquête pathologique anticorps marketing bovin caprin http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_10810 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_4586 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_28665 http://aims.fao.org/aos/agrovoc/c_493 http://aims.fao.org/aos/agrovoc/c_4620 http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_3324 http://aims.fao.org/aos/agrovoc/c_1790 http://aims.fao.org/aos/agrovoc/c_2442 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux S50 - Santé humaine E70 - Commerce, commercialisation et distribution Virus de la fièvre de la vallée du Rift épidémiologie fièvre ruminant genre humain transmission des maladies Enquête pathologique anticorps marketing bovin caprin http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_10810 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_4586 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_28665 http://aims.fao.org/aos/agrovoc/c_493 http://aims.fao.org/aos/agrovoc/c_4620 http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_3324 http://aims.fao.org/aos/agrovoc/c_1790 http://aims.fao.org/aos/agrovoc/c_2442 Roger, Matthieu Beral, Marina Licciardi, Séverine Soulé, Miradje Faharoudine, Abdourahime Foray, Coralie Olive, Marie-Marie Maquart, Marianne Soulaimane, Abdouroihamane Kassim, Ahmed Madi Cetre-Sossah, Catherine Cardinale, Eric Evidence for circulation of the Rift Valley fever virus among livestock in the Union of Comoros |
description |
Rift Valley fever virus (RVFV) is an arthropod-borne phlebovirus reported to be circulating in most parts of Africa. Since 2009, RVFV has been suspected of continuously circulating in the Union of Comoros. To estimate the incidence of RVFV antibody acquisition in the Comorian ruminant population, 191 young goats and cattle were selected in six distinct zones and sampled periodically from April 2010 to August 2011. We found an estimated incidence of RVFV antibody acquisition of 17.5% (95% confidence interval (CI): [8.9-26.1]) with a significant difference between islands (8.2% in Grande Comore, 72.3% in Moheli and 5.8% in Anjouan). Simultaneously, a longitudinal entomological survey was conducted and ruminant traderelated information was collected. No RVFV RNA was detected out of the 1,568 blood-sucking caught insects, including three potential vectors of RVFV mosquito species. Our trade survey suggests that there is a continuous flow of live animals from eastern Africa to the Union of Comoros and movements of ruminants between the three Comoro islands. Finally, a cross-sectional study was performed in August 2011 at the end of the follow-up. We found an estimated RVFV antibody prevalence of 19.3% (95% CI: [15.6%-23.0%]). Our findings suggest a complex RVFV epidemiological cycle in the Union of Comoros with probable inter-islands differences in RVFV circulation patterns. Moheli, and potentially Anjouan, appear to be acting as endemic reservoir of infection whereas RVFV persistence in Grande Comore could be correlated with trade in live animals with the eastern coast of Africa. More data are needed to estimate the real impact of the disease on human health and on the national economy. |
format |
article |
topic_facet |
L72 - Organismes nuisibles des animaux L73 - Maladies des animaux S50 - Santé humaine E70 - Commerce, commercialisation et distribution Virus de la fièvre de la vallée du Rift épidémiologie fièvre ruminant genre humain transmission des maladies Enquête pathologique anticorps marketing bovin caprin http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_10810 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_4586 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_28665 http://aims.fao.org/aos/agrovoc/c_493 http://aims.fao.org/aos/agrovoc/c_4620 http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_3324 http://aims.fao.org/aos/agrovoc/c_1790 http://aims.fao.org/aos/agrovoc/c_2442 |
author |
Roger, Matthieu Beral, Marina Licciardi, Séverine Soulé, Miradje Faharoudine, Abdourahime Foray, Coralie Olive, Marie-Marie Maquart, Marianne Soulaimane, Abdouroihamane Kassim, Ahmed Madi Cetre-Sossah, Catherine Cardinale, Eric |
author_facet |
Roger, Matthieu Beral, Marina Licciardi, Séverine Soulé, Miradje Faharoudine, Abdourahime Foray, Coralie Olive, Marie-Marie Maquart, Marianne Soulaimane, Abdouroihamane Kassim, Ahmed Madi Cetre-Sossah, Catherine Cardinale, Eric |
author_sort |
Roger, Matthieu |
title |
Evidence for circulation of the Rift Valley fever virus among livestock in the Union of Comoros |
title_short |
Evidence for circulation of the Rift Valley fever virus among livestock in the Union of Comoros |
title_full |
Evidence for circulation of the Rift Valley fever virus among livestock in the Union of Comoros |
title_fullStr |
Evidence for circulation of the Rift Valley fever virus among livestock in the Union of Comoros |
title_full_unstemmed |
Evidence for circulation of the Rift Valley fever virus among livestock in the Union of Comoros |
title_sort |
evidence for circulation of the rift valley fever virus among livestock in the union of comoros |
url |
http://agritrop.cirad.fr/573768/ http://agritrop.cirad.fr/573768/1/document_573768.pdf |
work_keys_str_mv |
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